How can I empty a file?

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Ramon F Herrera - 28 Jul 2006 12:51 GMT

How can I accomplish something like this:

% cp /dev/null somefile

in Java??

Thanks,

-Ramon

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Vincent van Beveren - 28 Jul 2006 13:26 GMT

> How can I accomplish something like this:
>
> % cp /dev/null somefile
>
> in Java??

RandomAccessFile raf = new RandomAccessFile("somefile", "rw");
raf.setLength(0);
raf.close();

or

(new FileOutputStream("somefile")).close();

or

File f = new File("somefile");
if (f.exists()) {
f.delete();
}
f.createNewFile();

Vincent

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Ramon F Herrera - 28 Jul 2006 21:00 GMT

> > How can I accomplish something like this:
> >
[quoted text clipped - 19 lines]
>
> Vincent

Vince:

Thanks for your answer. I should have specified that the file
"somefile" already exists but I don't care about its contents, I just
need to empty it.

-Ramon

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Oliver Wong - 28 Jul 2006 21:51 GMT

>> > How can I accomplish something like this:
>> >
[quoted text clipped - 25 lines]
> "somefile" already exists but I don't care about its contents, I just
> need to empty it.

Did you try the suggestions above? I think they would work despite this
extra specification.

- Oliver

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Ramon F Herrera - 29 Jul 2006 02:35 GMT

> >> > How can I accomplish something like this:
> >> >
[quoted text clipped - 30 lines]
>
> - Oliver

Yes, I tried them, and they work as expected.

Thanks!

-Ramon

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How can I empty a file?

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